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Get started9 The Avenue is a six-bedroom detached house in Radlett (WD7 7DG). It has a recorded floor area of 478 m² (around 5145 sq ft) and construction records dating it to 1967-1975. The latest certificate (May 2016) shows a C (score 72). The rating has held steady at C across 2 certificates since April 2010. Between certificates, roof efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The latest certificate is from May 2016, so improvements made since then won't be reflected. Other recorded features include a self-contained annexe.
At 478 m² the property is well over the postcode median (229 m² across 9 EPCs), placing it in the larger end of the local stock. 14 planning records sit against the property, 4 approved, 1 refused. Past consents include an extension, solar panel installation, partial demolition and a porch, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Today's modelled estimate of £3,161,000 is 17.1% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£525/sq ft) was about 65.9% above the typical sold price in the postcode. Most recent transfer: June 2020 at £2,700,000.
9 The Avenue's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 06 May 2026
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Latest sale on 9 The Avenue was the highest on Land Registry record across the postcode.
£3,161,000
Modelled from EPC, postcode comparables.
£2,700,000
Recorded with HM Land Registry.
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9 The Avenue is notably below the street on co₂ emissions.
Price per m²
£5,649
Street avg £5,458
Floor Area
478 m²
Street avg 389 m²
Habitable Rooms
12 rooms
Street avg 9 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Williams Way — bus stop.

Daytime· 07:00 – 23:00
45.7dB

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Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
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Extension: Rear of property
Demolition of 2x rear conservatories and erection of replacement rear extensions including solar panels on roof, erection of staircase to side of garage and air conditioning units to side elevations.
Part of G2 3no. CEDARS. Reduction of lateral spread by 2m to suitable pruning points as shown on attached photos marked as T1.
12 more applications for this property
See the full planning history in the property report.
30 June 2020Most recent
£2,700,000
Median price across the last 5 sales in WD7 7DG: £1,485,000 (2025–2015).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Plus much more
Comparable sales, transport, crime, schools and more

CO₂ Emissions
13.0 t/year
Street avg 9.7 t/year
WD7 7ED
Closest school
0.8 km
Newberries Primary School. 6 schools nearby.
Night-time· 23:00 – 07:00
37.9dB